Palestra DevCamp 2018 - Igor Hjelmstrom Ribeiro: Bitcoin: desafios de segurança frente à ataques de origem global.

1. (with comments on Brazilian markets)

3. B

4. Trust
https://www.youtube.com/watch?v=UP1YsMlrfF0

5. Trust

6. What if I use the biggest, most well funded player in
the world?

7. SMS & 2FA
https://www.youtube.com/watch?time_continue=175&amp=&v=mLh1Nmqa6OM

8. SMS & 2FA

9.  Well known in Brazilian Bitcoin Community.
 Above-Market returns promised.
 Gone with 500 BTCs in @2017.
Brazil is different?

10. Brazil is different?

11. Brazil is different?

12. Brazil is different?

13. Brazil is different?

14. Coercion

15. Coercion

16. Paranoid?

17.  Purchase balanced dice. & test them.
 You will roll them at least 99 times to generate a private key.
 Look for B6 dice Bitcoin for some references.
 Find a secure computer.
 Remove networking capability (wifi & wired).
 Boot it with an ephemeral operating system.
 Generate your private key from dice rolls xor’ed with regular
randomness sources.
 Burn down the computer (just to be sure).
 Store using BIP38 in as safe location.
 Use a hard-to-guess password and never write it down
○ Anywhere (make sure you don’t forget it either!)
Paranoid? (only half-joking!)

18.  Trezor
 Ledger
 Open Dime
Dedicated Hardware

19. Cold Storage

20. Cold Storage

21.  Multi Signature.
 Timelock.
Paranoid?

22. Paranoid?
 WHERE IS IT?

23. Mainstream?

24. Mainstream?

25. … & more:

26.  Governance challenges everywhere;
 Smart Contracts;
 Incredible array of options (most worthless or soon-to-be
worthless).
Going forward – increasingly complex
Environment

27. Working with the community

28. Final Remarks
 Security can’t be bolted on afterwards;
 Security is expensive;
 Security is inconvenient;
 Security is not absolute;
 Please think about this – find the right security vs
convenience trade-offs for you and make sure you take
measures to achieve appropriate protection.

29. Q & A
igorhvr@walltime.info
https://www.linkedin.com/in/igorhvr/
https://walltime.info/intro.html
Thanks,
!